198512 has 20 divisors (see below), whose sum is σ = 405480. Its totient is φ = 93888.

The previous prime is 198503. The next prime is 198529. The reversal of 198512 is 215891.

It is a happy number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 630.

It is an arithmetic number, because the mean of its divisors is an integer number (20274).

2¹⁹⁸⁵¹² is an apocalyptic number.

It is an amenable number.

198512 is an abundant number, since it is smaller than the sum of its proper divisors (206968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198512 is a wasteful number, since it uses less digits than its factorization.

198512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 674 counting only the distinct ones).

The product of its digits is 720, while the sum is 26.

The square root of 198512 is about 445.5468549996. The cubic root of 198512 is about 58.3349623128.

The spelling of 198512 in words is "one hundred ninety-eight thousand, five hundred twelve".